Turnable roll pairs



April 5, 1966 TURNABLE ROLL PAIRS Filed April 29, 1963 Fig. i Fig. 2 Fig. 3

5. E. M. NORLINDH ET AL I 10 Sheets-Sheet 1 Fig. 4

IN V EN TORS ham 'syafm m April 1966 s. E. M. NORLINDH ET AL TURNABLE ROLL PAIRS l0 Sheets-Sheet 2 Filed April 29, 1963 April 1966 s. E. M. NIORLINDH ET AL 3,243,983

TURNABLE ROLL PAIRS Filed April 29, 1963 10 Sheets-Sheet 3 April 5, 1966 s. E. M. NORLINDH ET AL 3,243,983

TURNABLE ROLL PAIRS Filed April 29, 1963 10 Sheets-Sheet 4 April 1966 s. E. M. NORLINDH ET AL- TURNABLE ROLL PAIRS 1O Sheets-Sheet 5 Filed April 29, 1963 April 5, 1966 s. E. M. NORLINDH ET AL 3,243,983

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April 5, 1966 s. E. M. NORLINDH E AL 3,243,933

TURNABLE ROLL PAIRS Filed April 29, 1963 10 Sheets-Sheet 7 Fig. 10

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TURNABLE ROLL PAIRS Filed April 29, 1963 10 Sheets-Sheet 10 IN VEN TORS ZW 5W4 m ipmzwix z BY ua 29 J' LQ/L UL, A? ai Q 1 22 v J LAM/L United States Patent 3,243,983 TURNABLE ROLL PAIRS Sven Erik Maite Norlindh, Morgardshammar, and Karl Elis Jansson, Hagfors, Sweden, assignors to Morgardshamrnars Mek. Verkstads Aktiebolag, Morgardshammar, Sweden Filed Apr. 29, 1963, Ser. No. 279,698 Claims priority, application Sweden, May 2, 1962, 4,913/ 62 6 Claims. (Cl. 72-235) In conventional continuous rolling mills for bar steel, wire and bands, normally horizontal roll pairs are used, but in a number of cases horizontal and vertical roll pairs are used alternately. In some cases the vertical roll pairs are constructed such, that the roll pair proper can be placed vertically or horizontally, in such a manner, that there is one shaft provided for the vertical position and a second shaft for the horizontal position, both shafts driven by a common motor.

FIG. 1 shows the ideal angles for rolling wire and steel bars of small dimension,

FIG. 2 shows the ideal angles for rolling steel bars of larger dimensions,

FIG. 3 shows the ideal angles for rolling flats and thick band dimensions, and

FIG. 4 shows the ideal angles for rolling bands of small thickness.

FIGS. 5, 6, 7 and 8 are diagrammatic side views of a single embodiment of the apparatus according to the present invention, the apparatus being shown in said views, in its several operating positions at angles 0, 45, 90 and 135 respectively.

FIG. 9 is a section through the roll unit and turning axis of the apparatus illustrated in FIGS. 5-8 inclusive.

FIG. is a top View of a vertical roll pair and two horizontal roll pairs.

FIG. 11 shows the same roll pair units connected in pairs over a pulley wheel, in the angles +22.5 and 22.5 respectively.

FIG. 12 is a showing similar to that in FIG. 11, in the angles +67.5 and 67.5, respectively.

FIG. 13 is a diagrammatic representation of a different embodiment of the invention, namely, a roll pair unit, with stand, driving gear and motor, mounted on a bottom plate which is rotatable about a fixed turning axis disposed at that end of said plate which is proximate to the roll pair unit.

It appears, thus, that from a rolling technical point of view it would be desirable that the angular positions of the roll pairs could vary between 0 and 135. However, the technical and economical prerequisite conditions for realizing this desire were known heretofore tions for realizing this desire were known heretofore. It was, therefore, necessary, to turn the rolling material between certain passes, in spite of the disadvantages involved in this continuous rolling method, for example unsafe rolling and tearing.

This invention relates to roll pair units for continuous rolling mills which are characterized in that the roll pairs with associated driving gears, motor, guides and other equipment are adapted to be turned into the angles required, at least 90.

The invention is shown in a side View in FIGS. 5, 6, 7 and 8 in the angles 0, 90 and 135. FIG. 9 shows a section through the roll unit and the turning axis, and FIG. 10 shows a top view of a vertical roll pair and two horizontal roll pairs, one of the latter sectioned through one of the rolls. FIGS. 11 and 12 show the same roll pair units connected in pairs over a pulley wheel. FIG. 13 shows a different embodiment of the roll pair unit.

3,243,983 Patented Apr. 5, 1966 Referring to FIG. 5, the turning axis is designated by 10 and the roll pass line by A. On a beam stand 22, 23 secured in the concrete ground a holder 20, FIG. 9, is mounted and provided with a bearinig 15a preferably in the form of a thread for a turning head 15. In the turning head 15, there is provided an opening 15b for the entry guides 18 with associated positioning tool 19 adjusted to the different sizes and constructions of the entry guides. In FIG. 6, a positioning tool 19 for one-strand rolling is shown, while the positioning tool 19 shown in FIG. 17 is for two-strand rolling. FIG. 9 shows also guide surfaces 6a for the frame 6 and equipment for moving the frame with roll pair and drive means from one roll groove or track to another, for example, in the form of a screw 16 and gear 17, FIG. 6.

The roll pair, FIG. 9, with the rolls 1, 2, the bearing casings 1a, 2a, set screws 3 and set screw gear 4, is supported on frame 6 with a mounting 3a and guided in the rolling direction by the guide surfaces 6b, FIG. 10, and in the axial direction by the guide surfaces 6c in the frame 6. By this arrangement, traction and compressive forces from the rolling material are transferred from the rolls 1, 2 via the bearing casings 1a, 2a and the frame 6 to the turning head 15 and holder 20.

The rolls are driven with couplings 1b, 217 by a driving gear 7 and motor 8 which together with frame 6 form a bolted unit or frame-Work supported in the turning axis A in holder 20 and at the motor in the support 13, 14, FIGS. 5 to 8 and 10.

The motor 8 may be mounted with flanges on the driving gear 7 and/ or on a motor shelf 12 which at the same time forms guide surfaces against support 13, 14. For cooling, the motor 8 may be provided with a fan 10 and heat exchanger 9.

For turning the roll pair units from vertical position 0 in FIG. 5 to 45, and FIGS 6, 7 and 8, according to the wishes appearing from FIGS. 1, 2, 3 and 4, the motor shelf 12 or the driving gear 7 may suitably be provided with a lifting eye 7a, FIGS. 5 to 8, so that the turning can be carried out with the help of an overhead crane.

In FIGS. 11 and 12, a different turning arrangement is shown comprising a pillar 29 supported on a. seat 30 in the foundation. At the upper end of the pillar, a bearing 31 with gear 32 and motor 33 is mounted for a pulley wheel or support wheel 34 which via ropes, chains or the like 35, yoke 36 and ropes or chains 37 supports and balances two roll pair units in the points 38. Hereby, it is possible to turn two roll pair units with the horizontal position as a base by a small motor 33 and gear 32 relative to one another, for example, to :0", 122.52 :45 and $67.5.

The normal construction for the continuous bar steel, wire and band mills is the two high mill, but the tilting roll pair units shown here may also be constructed for four-high or multi-roll rolling mills.

In FIG. 13 a different embodiment is shown, wherein the roll pair with stand 55, driving gear 56 and motor 57 is mounted on a bottom plate 5t displaceably mounted in the slide 54 which is rotatably mounted in the fixed turning axis B. The longitudinal displacement of the bottom plate 50 is necessary, partly in order to make the roll pass line C correspond to the angles '4S and partly for the displacement from one track to another. The longitudinal displacement may be effected hydraulically or by a screw 51, gear 52 and motor 53.

The complete roll pair unit is supported in the fixed turning axis B and in the support 58, 59 or 60.

By this embodiment, only angles in relation to the horizontal plane can the attained with the common roll pass line C. In horizontal position (dotted) it is possible to attain all pairs with one roll pass line,

for example in D, which may be used in multi-strand rolling.

The roll pair unit may be provided with a frame 6 (as shown inFIGS. 58) instead of with the bottom plate 50 shown in FIG. 13.

What We claim is: Y

1. Stand of rolls for continuous rolling mills comprising a pair of grooved rolls, drive means therefor, said drive means including a drive motor and a motor shelf therefor, a stationary holder, a turning head rotatably mounted in said stationary holder, and inlet guides, said turning head having an opening therein for said inlet guides, said stand of rolls and said drive means as a whole being supported at two points namely partly at said turning head and partly at said drive means.

2. Stand of rolls according to claim 1, characterized in that the rotatable mounting of the turning head in the stationary holder is a thread.

3. Stand of rolls according to claim 1, characterized in that a frame-work is mounted displaceably on the turning head and that in the frame-work guides are provided 'for the roll mounting for moving the rolls when changing the groove or track.

4. Stand of rolls according to claim 1, characterized in that a frame-work is mounted displaceably on the turning head and that the frame-Work is connected with the driving gear and the driving motor.

5. Stand of rolls according to claim 1, in Which said stand of rolls and drive means as a whole are suspended at said two points of support.

6. Stand of rolls according to claim 5, characterized in that two adjacent stands which are set substantially symmetrically in relation to the horizontal plane, are balanced and turned towards one another via a pulley Wheel With suspension means; the pulley Wheel being mounted tiltably on a pillar and provided with drive mechanism for turning the stands into the desired angular positions.

References Cited by the Examiner UNITED STATES PATENTS 7 Simmons 72238 CHARLES W. LA-NHAM, Primary Examiner. C. H. HITTSON, G. P. CROSBY, Assistant Examiners. 

1. STAND OF ROLLS FOR CONTINUOUS ROLLING MILLS COMPRISING A PAIR OF GROOVED ROLLS, DRIVE MEANS THEREOF, SAID DRIVE MEANS INCLUDING A DRIVE MOTOR AND A MOTOR SHELF THEREFOR, A STATIONARY HOLDER, A TURNING HEAD ROTATABLY MOUNTED IN SAID STATIONARY HOLDER, AND INLET GUIDES, SAID TURNING HEAD HAVING AN OPENING THEREIN FOR SAID INLET GUIDES, SAID STAND OF ROLLS AND SAID DRIVE MEANS AS A WHOLE BEING SUPPORTED AT TWO POINTS NAMELY PARTLY AT SAID TURNING HEAD AND PARTLY AT SAID DRIVE MEANS. 